A genetic analysis suggests the bird flu virus mutated inside a Louisiana patient who contracted the first severe case of the ...

The CDC has confirmed a total of 66 human cases of bird flu across the United States as of Friday, although the number is ...

The CDC said Thursday its analysis of samples from a Louisiana patient with bird flu showed mutations not seen in samples ...

The bird flu virus found in a severely ill patient hospitalized in the United States has mutated to become better adapted to ...

The ongoing spread of bird flu in the United States has alarmed experts -- not just because of human cases causing severe ...

A new mutation and the first severe case of H5N1 bird flu discovered in a human in Louisiana has raised concern among some ...

This year's winter COVID-19 wave is off to a late start, and experts expect cases to keep rising. Here's what to know.

The virus in the first severe human bird flu case in the U.S. was found to have mutated. Newsweek's live blog is closed.

California is known for its residents' healthy lifestyles, but what does that mean for heart disease mortality risk if you ...

COVID-19 cases are back on the rise nationally, according to the latest trend data from the Centers for Disease Control and Prevention. CDC data shows an increase in weekly test positivity and a ...

A Northern Kentucky resident has died after being exposed to rabies, the Kentucky Department of Public Health said Friday.